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Preparation method of superhard diamond grinding wheel

A diamond grinding wheel and diamond technology are applied in the field of preparation of superhard diamond grinding wheels, which can solve the problems of high-hardness material grinding and insufficient hardness of diamond grinding wheel abrasives, and achieve the effects of improving strength, low equipment cost and short technological process.

Inactive Publication Date: 2016-07-06
LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of the existing diamond grinding wheel abrasives prepared with metal materials as a bond is not strong enough, and cannot be suitable for grinding high hardness materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of superhard diamond grinding wheel, it comprises the following steps:

[0025] (1) Preparation of titanium dioxide sol; when preparing titanium dioxide sol, first dissolve butyl titanate in absolute ethanol under stirring, then add diethanolamine, after the solution is evenly mixed, add ethanol aqueous solution dropwise, continue stirring, and then Aging to obtain titanium dioxide sol; the ratio of butyl titanate, water, diethanolamine and ethanol in the titanium dioxide sol is 1:1:1:(25-28). The invention adopts butyl titanate as an organic precursor, takes ethanol as an organic solvent, and prepares titanium dioxide sol through alcoholysis, hydrolysis and polycondensation reactions.

[0026] (2) Clean the diamond particles; when cleaning the diamond particles, first soak the diamond particles in hydrochloric acid solution, then rinse with deionized water until the pH value of the rinse solution is 7, and dry them, then ultrasonically clean them...

Embodiment 1

[0033] First dissolve butyl titanate in absolute ethanol under stirring, then add diethanolamine, after the solution is uniformly mixed, then add ethanol aqueous solution dropwise, continue stirring, and then age at room temperature for 1 hour to obtain titanium dioxide sol, in which butyl titanate The ratio of ester, water, diethanolamine, and ethanol is 1:1:1:25; at the same time, the diamond particles are first soaked in hydrochloric acid solution, and then rinsed with deionized water until the pH value of the rinse solution is 7, and dried. Dry, then ultrasonically clean with acetone, then rinse with deionized water and dry, then soak the cleaned diamond particles in the above titanium dioxide sol, take them out after standing, and then dry them in an oven at 70°C for 6 minutes, then cool ; and repeat the above steps 3 times; then place it in the muffle furnace, raise the temperature of the muffle furnace to 90°C and keep it for 30 minutes, then raise the temperature to 600...

Embodiment 2

[0035]First dissolve butyl titanate in absolute ethanol under stirring, then add diethanolamine, after the solution is uniformly mixed, then add ethanol aqueous solution dropwise, continue stirring, and then age at room temperature for 1 hour to obtain titanium dioxide sol, in which butyl titanate The ratio of ester, water, diethanolamine, and ethanol is 1:1:1:26.5; at the same time, the diamond particles are first soaked in hydrochloric acid solution, and then rinsed with deionized water until the pH value of the rinse solution is 7, and dried. Dry, then ultrasonically clean with acetone, then rinse with deionized water and dry, then soak the cleaned diamond particles in the above titanium dioxide sol, take them out after standing, and then dry them in an oven at 80°C for 5 minutes, then cool ; and repeat the above steps 4 times; then put it in the muffle furnace, raise the temperature of the muffle furnace to 95°C and keep it warm for 25min, then raise the temperature to 700°...

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Abstract

The invention relates to a diamond grinding wheel, and particularly discloses a preparation method of a superhard diamond grinding wheel. The preparation method comprises preparing titanium dioxide colloidal sol; cleaning diamond particles, heating, drying and cooling; placing the diamond particles in a muffle furnace for heat treatment; mixing and ball milling the diamond grinding material, silicon oxide powder, aluminum oxide powder, boron oxide powder, potassium oxide powder, lithium oxide powder and sodium bicarbonate powder; screening the mixed and ball mixed material, placing the material into a mold, carrying out cold press molding, and drying; placing the dried material into the furnace to be sintered, and after cooling, releasing the mold to obtain the diamond grinding wheel piece. The preparation method, disclosed by the invention, is to soak the diamond into the titanium dioxide colloidal sol, so as to coat the diamond particle surface with the titanium dioxide film, and greatly improve the property of diamond; meanwhile, as the silicon oxide powder, the aluminum oxide powder, the boron oxide powder, the potassium oxide powder, and the lithium oxide powder are mixed as a bonding agent, and the sodium bicarbonate is added, the prepared diamond grinding wheel piece is better in quality when compared with that prepared by the similar technology; the preparation method is beneficial to industrialized production.

Description

technical field [0001] The invention relates to a diamond grinding wheel, in particular to a preparation method of a superhard diamond grinding wheel. Background technique [0002] In recent years, with the advancement of science and technology, people's requirements for production tools are developing in the direction of high efficiency, long life and high economy. In many fields, tools of ordinary materials can no longer meet the increasing requirements of laborers. Therefore, diamond The representative diamond grinding tool has developed rapidly, and its application has penetrated into the fields of mechanical processing, automobile manufacturing, aerospace, biology, medical equipment, electronic information, construction, transportation, geological mining and so on. [0003] At present, most of the artificially synthesized diamonds are in the form of powder or fine particles. In order to use diamonds for high-precision and high-efficiency grinding, bonding agents are usu...

Claims

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Application Information

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IPC IPC(8): B24D18/00B24D3/04B24D3/34C04B35/528C04B35/628C04B35/63
CPCB24D3/04B24D3/342B24D18/0009C04B35/528C04B35/62839C04B35/62886C04B35/6303C04B2235/3201C04B2235/3203C04B2235/3217C04B2235/3232C04B2235/3409C04B2235/3418
Inventor 黎超英吴沛荣
Owner LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
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